For all the paranoid American theories of being “red-pilled,” of awakening into a many-tentacled liberal/feminist/Jewish conspiracy, the most corrosive force, the ectoplasm infusing itself invisibly through media and culture and politics, is white supremacy.

DiAngelo sets aside a whole chapter for the self-indulgent tears of white women, so distraught at the country’s legacy of racist terrorism that they force people of color to drink from the firehose of their feelings about it.

“The most effective adaptation of racism over time,” DiAngelo claims, “is the idea that racism is conscious bias held by mean people.” This “good/bad binary,” positing a world of evil racists and compassionate non-racists, is itself a racist construct, eliding systemic injustice and imbuing racism with such shattering moral meaning that white people, especially progressives, cannot bear to face their collusion in it. (Pause on that, white reader. You may have subconsciously developed your strong negative feelings about racism in order to escape having to help dismantle it.)

DiAngelo addresses her book mostly to white people, and she reserves her harshest criticism for white liberals like herself (and like me), whom she sees as refusing to acknowledge their own participation in racist systems. “I believe,” she writes, “that white progressives cause the most daily damage to people of color.” Not only do these people fail to see their complicity, but they take a self-serving approach to ongoing anti-racism efforts: “To the degree that white progressives think we have arrived, we will put our energy into making sure that others see us as having arrived.”

And the expectation of “white solidarity”—white people will forbear from correcting each other’s racial missteps, to preserve the peace—makes genuine allyship elusive. White fragility holds racism in place.

DiAngelo attempts to explicate the phenomenon of white people’s paper-thin skin. She argues that our largely segregated society is set up to insulate whites from racial discomfort, so that they fall to pieces at the first application of stress—such as, for instance, when someone suggests that “flesh-toned” may not be an appropriate name for a beige crayon. Unused to unpleasantness (more than unused to it—racial hierarchies tell white people that they are entitled to peace and deference), they lack the “racial stamina” to engage in difficult conversations. This leads them to respond to “racial triggers”—the show “Dear White People,” the term “wypipo”—with “emotions such as anger, fear and guilt,” DiAngelo writes, “and behaviors such as argumentation, silence, and withdrawal from the stress-inducing situation.”

In more than twenty years of running diversity-training and cultural-competency workshops for American companies, the academic and educator Robin DiAngelo has noticed that white people are sensationally, histrionically bad at discussing racism. Like waves on sand, their reactions form predictable patterns: they will insist that they “were taught to treat everyone the same,” that they are “color-blind,” that they “don’t care if you are pink, purple, or polka-dotted.” They will point to friends and family members of color, a history of civil-rights activism, or a more “salient” issue, such as class or gender. They will shout and bluster. They will cry. In 2011, DiAngelo coined the term “white fragility” to describe the disbelieving defensiveness that white people exhibit when their ideas about race and racism are challenged—and particularly when they feel implicated in white supremacy. Why, she wondered, did her feedback prompt such resistance, as if the mention of racism were more offensive than the fact or practice of it?

The petition complains that the Confederate flag was removed because it offended black people through its historic association with slavery and white supremacy, and laughably asserts that the African-American Monument, designed by sculptor Ed Dwight, provokes the same outrage for whites.